how to bypass internal DNS?

Question

This is about Ubuntu but should be pretty much the same on all Linux flavors. Let's say I add an entry to my /etc/hosts such as

127.0.1.12   facebook.com

and an Apache virtual host such as

<VirtualHost 127.0.1.12>
   ServerName facebook.com
   DocumentRoot /var/www
</VirtualHost>

when i open my browser and send a GET request to facebook.com, firefox will browse my /var/www folder.

Question: How could I fetch (ie, using wget in bash) the real facebook.com domain - without erasing the entry in /etc/hosts nor my Apache VirtualHost -- IOW how could I bypass internal DNS?

score 3 · Accepted Answer · answered Mar 12 '11 at 23:52

3

Often the best setup is the other way around - Setup a DNS server with zones for the sites you want to spoof and point clients to your DNS server. Then you can set an outside set of servers in /etc/resolv.conf on your web server, or add a hosts entry pointing to the real site.

answered Mar 12 '11 at 23:52

Paul Doom

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that's a really good idea! I wasn't thinking outside the box! I would vote you up but I don't have enough reputation :( thanks! – fabjoa Mar 12 '11 at 23:59

score 1 · Answer 2 · answered Mar 12 '11 at 23:33

1

In /etc/nsswitch.conf, replace this:

hosts:          files dns

with this:

hosts:          dns

answered Mar 12 '11 at 23:33

EEAA

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how to bypass internal DNS?

2 Answers2